Windows 8.1 not booting on SP6

[GD 2W10]

Hello,

I have a Surface Pro 6 dual booted with Windows 11 and 8.1. I have gotten past the windeploy part of setup by deleting intelpep.sys, as it will give me a BSOD with the INTERNAL_POWER_ERROR message with the file on there, but on the first boot, it gives me the INACCESSIBLE_BOOT_DEVICE error. I have gotten Windows Server 2012 R2 on there, so it probably has to do with a driver that is being loaded. How can I fix this?

[Jaguarek62]

I would suggest loading different ahci driver from intel?